AD 2022-20-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
Unsafe Condition
The oxygen tubes of the crew oxygen system may be contaminated with lubricants, as a result of the manufacturing and cleaning procedures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Clean and flush the crew oxygen system, including cleaning end fittings and threads, cleaning the inner wall of the tubes with solvent, and flushing the inner wall of the tubes with nitrogen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified time frame (not fully stated in the provided text).
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Affected Aircraft
MHI RJ Aviation ULC airplanes: Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) and CL-600-2C11 (Regional Jet Series 550), serial numbers 10346 and 10347; Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900), serial numbers 15413 through 15484 inclusive; Model CL-600-2E25 (Regional Jet Series 1000), serial numbers 19049 through 19064 inclusive; and airplanes equipped with tube part numbers installed after specified dates in MHI RJ Service Bulletin 670BA-35-016, Revision B.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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